Dump car



May 29, 1934. R. E. CARTZDAFNER DUMP CAR Filed May 10 1926 4Sheets-Sheet l ll lllllilllov INVENTOR. ROY E.CARTZDAFNER A TTORNEY.

May 29, 1934. RJE. cARTznAFNz DUMP CAR Filed May 10 1926 4 Sheets-Sheet2 'INVENTOI? ROY E. CARTZDAFNER ATTORNEY BY Wm May 29, 1934- R. E.CARTZDAFNER DUMP CAR Filed May 10 1926 4 Sheets-Sheet 3 JNVENTOR.

ROY E. CARTZDAFN ER AT'I'ORNEY.

May 29, 1934. R. E. CARTZDAFNER 60,574

DUMP CAR Filed May 10 1926 4 Sheets-Sheet 4 INVENTOR.

ROY E CARTZDAFNEP w roazaw.

A TTORNE Y.

Patented May 29, 1934 DUMP CAR Roy E. Cartzdafner, Passaic, N. J.,assignor to Magor Car Corporation, New York, N. Y., a corporation ofDelaware Application May 10, 1926, Serial Nth-107,912

16 Claims.

The invention relates in general to a dump car of the type in which acar body is mounted on the under-frame for dumping movement laterally inboth directions and in which the dumping movement is effected by the useof pneumatic cylinders on opposite sides of the car body mounted to pushthe car body into its dumping position. More specifically defined, theinvention relates to that type of dump car in which the body issupported while in its normal righted position on outbearing supportsand each or" which 0&- centered supports constitutes the pivot aboutwhich the car body rocks when the opposite side is elevated by thecylinders therebeneath to effect the dumping movement.

The primary object of the invention is to provide a simplified iori l ofdump car of the type outlined which features ruggedness of structurewith the use of the least amount of structural material and which can beconstructed economically and marketed at low cost and at the same timemeet fully the requirements of the Master Car Builders Association inthe construction of a dump car of the type herein illustrated.

Broadly, this phase of the invention is attained not so much by theincorporation of radically new features as it does upon the developmentof structural details which in their accumulative effect provide a carstructure of approved. form and which can be sold in competition withsimilar conventional dump cars,

Devices of this character are subjected while .in use to rough usagewith resulting tendency towards distortion which becomes particularlynoticeable in the case of cars intended to carry heavy ladingsincidental to their use in mine worn. Accordingly, the inventionfeatures the providing of structural parts having sufiicient ruggednessto withstand the distorting strain in such types of cars and at the sametime to feature the minimizing oi the use of massive materialparticularly intended to compensate for distorting strains. Accordingly,the present disclosure ieatures the utilization of structural partswherever possible to perform a multiplicity of functions. As a specificinstance the invention features the providing of a structural unithaving the dual function of pivotally mounting the dumping cylinders andat the same time providing rugged and well braced outbearing supportsadjacent the cylinders for receiving the car body when in normalposition and to provide a rugged turning point for supporting the carbody when moved into its dumping position on-the contiguous side of theuuderframe.

which will at the same time permit an easy opening movement of the dooron the depressed side of the car and which will ease the openingmovement of the door so as to minimize the tendency of the door to slaminto open position or otherwise jar the car body or distort the doorwhen handling and dumping heavy lading.

Another object of the invention is to provide a structure of the typeoutlined which will feature economy in spaced position and toaccommodate within the prescribed outlinesof the car-the largestpossible lading carrying body and accordingly the invention features anassembling of the other parts in the smallest possible space.

Various other objects and advantages of the invention will be in partobvious from an inspection of the accompanying drawings and in part incertain new and novel features of construction and combination pf partshereinafter set forth and claimed.

In the accompanying drawings,

"Fig. l is a view in side elevationof an end portion, the right endportion, of a dump carillusof the car, it being understood that the carstruc-- ture is of conventional design in that opposite ends are ofsimilar construction and the detailed description of par-ts at eitherend will be'sufficient for the corresponding parts at the opposite endwith obvious reversal in position of the several parts;

Fig. 3 is a transverse sectional View taken approximately on the lines3-3 of Fig. 1 and showing the car body in its normal righted, runningposition; 1

Fig. 4 is a view similar to Fig. 3 taken on the line 4-4 of Fig. 1and-showing thecar body in one of its laterally dumped positions; and

Fig. 5 is an enlarged sectional view taken on the line 5- 5 of Fig. 1showing the cylinder enlarged and partly broken away.

- In the drawings there is shown an underframe 10 suitably mounted atopposite ends on trucks, one of which 11 is shown in side elevation inFig. 1

.- for supporting the cylinder.

and the other of which 12 is shown in diagrammatic outline at the lefthand side of Fig. 2. The underframe is somewhat of conventional designand includes a fabricated form of center sill 13 shown in section inFigs. 3 and 4. Positioned above the truck in each instance is a bolster14 formed of pressings l5 fitted between and on cpposite sides of thefabricated sills 16 forming the sides of the center sill. Supported onthe underframe by means hereinafter described are four dumping cylinders17 two disposed on each side of the underframe and each positioned atopposite longitudinal ends of an air reservoir tank A adapted to containcylinder actuating fluid, such as air under pressure. It is understoodthat the cylinders are connected to be actuated from pressure suppliedfrom these tanks and controlled by valves mounted on the car andcontrolled either by manual operation at the car or through a pneumaticcontrol actuated by the engineer in the locomotive attached to the trainof which the car forms a unit.

Referring specifically to the mounting of either one of the cylinders itis noted that the cylinders are arranged in pairs transversely disposedon opposite sides of the longitudinal medial plane through tce centersill and the cylinder on each side is pivotally mounted for rockingmovement about a longitudinally and horizontally disposed axis throughthe agencies of trunnions l8 and 19 projecting from opposite sides ofeach cylinder and rotatably mounted in bearings 20 provided in cylindersupporting castings 21 shown in Fig. 3 and particularly featured in thisdisclosure. These castings project in longitudinally spaced apart andlaterally projecting position from the center sill. The center sill isreinforced in alignment with the castings by means of pressings 22designed to coact with the castings and provide a rigid composite memberwhich in effect extends through the center sill and provides a ruggedsupport for the dumping cylinders at the outer ends thereof.

The casting 21 is fitted to the adjacent trough of the channel member 16as shown particularly in Fig. 3, is cored as shown at 23 to lighten thestructure and is flanged and webbed to provide the necessary structuralstrength while featuring lightness of material. The casting is providedat its outer upper edge with a shouldered portion the upper side or"which is provided with a half groove forming the bearing 20 and theupper half of the bearing is completed by a recess formed on theunderside of a cap 24 secured to the casting by bolts 25. From thisconstruction it is seen that removing the cap will permit the easymounting of the cylinders and after the trunnions are seated the capsare disposed in position and bolted to complete the casting structureThe casting is provided at its upper forward corner with a pair ofupstanding ears 25 and 26 through which extends a pin 27 constitutingone of the lower hinge pinshereinafter referred to.

The dumping cylinders are of the expansible type and include an outeropen top cylindrical shell 26 (see Fig. 5) having a bottom 2'7 providedwith an opening 28 and which is closed conventionally by a cap 29.Slidably mounted on the shell 26 is an open bottom trunk piston 30 provided adjacent its lower end with an outstanding flange 31 forming anannular pocket in which is contained a gasket 32 outlined on its upperand outer sides by a sheet packing 33 maintained distended by a steelexpansion ring 34. At

the upper end of the shell 26 a flanged closure ring 35 provides a stopfor the upward movement of the piston 30. Slidably mounted within thepiston 30 is an inner piston 36 provided with a stem 37 which extendscentrally through the head 38 of the pistong30. A gasket 39 similar tothe gasket 32 is positioned to maintain a fluid tight fit between thepistons 30 and 36. Due to limitation of space, the dumping cylinders aremade of the least possible axial length and in order to economize inspace the hub 49 of the piston 36 at the place where the rod 37 isattached is designed to extend downwardly and into the opening 28 whenthe pistons are in their collapsed position. It is intended that thepistons 30 and 36 approach the bottom 27 as near as possible and thedisposition of the gasket 32 to the outside of the inner wall of thepiston 30 provides a fluid tight connection between the piston 30 andthe shell 26 and at the same time provides the maximum travel for thepiston 36 within the piston 30. The top of the piston stem or rod 3'7 isprovided with a head 40 through which is passed a pin 41 opposite endsof which are contained in a pair of piston cap bearings 42 secured tothe car body underirame.

In addition to the body supports provided by the pair of pins 2'7 onopposite sides of each of the four cylinders, the car body is alsosupported at the outer ends of each of the bolsters. For this purposethe outer end of the bolster is defined by a massive casting 43 somewhattriangular in side elevation. The casting 43 is provided with twooutstanding reinforcing ribs 44 and 45 between which is mounted a pin 46resembling the pin 2'7 in that it constitutes a lower hinge bearing forthe car body and differing from the pin 27 in that it is larger and ormore rugged construction. From this arrangement of upwardly exposed pinsit is seen that the car body is supported on opposite sides on fixedpins formed of two pairs of relatively small pins on opposite sides ofeach of the cylinders and a larger pin at the end of each of thebolsters.

Supported on these pins is the tiltable car body 11 the showing in Fig.4. The car body is supported in its normal righted position by top hingecastings 52 designed to straddle pins 27 and by similar top hingecastings 53 designed to straddle the pins 46 of the bolsters. These tophinge castings are secured in each instance to the car body underframe48 and are similar in that they include inverted U-shaped saddlesdesigned to fit over their associated pins in the bottom hinge castingsand designed in each instance to coact therewith to provide apivotalsupport for the car 1 body when it is rocked about the line ofpins on either side of the car. The outbearing pins of the bolster arebraced by a bolster bottom plate 53' which permits the use of a gussetplate reinforcement to receive outbearing strains from the v" car bodyand transmit them to the bolster and center sill in a way which is ofcourse not possible with the pins 2'7 for a bottom plate gusset wouldinterfer with the swinging of the cylinders.

However as will be noted from the showing in 15g Fig. 2, the top coverplate 54 extending across the top of the center sill and across thecastings 21 in effect provides a gusset plate support for the outbearingpins 27 and assists in transferring the weight of both car bodyandcylinders to the center sill. In the showing in Fig. 2 there isdisclosed a wheel stop 56 forming no particular feature of thisdisclosure except as an incidental brace for the adjacent cross bearer.

The car body is provided on opposite lateral sides with doors 56 of thegravity opening type and somewhat conventional in design; The doorincludes a channel top stiffener 57, a 2 bottom door stiffener 58 andconventional panels. Each door is provided with a plurality ofvertically disposed combined door stiffeners and control uprights 59. Toeach stiffener is attached a hinge leaf 60 pivotally mounted to a hingecasting 61 in turn secured to the side sill 49 as particularly shown atthe left of Fig. 3. The door stiffener is provided with an extension 62depending below the pivotal connection at 60, 61, and this ex tension isprovided on the inner side of its lower end with a locking recess 63 andthereabove with a cam face 64 designed for purpose hereinafterdescribed. The doors are maintained in their normally locked position bya stop member 65 which when the car body is in its normal rightedposition as shown in Fig. 3 engages the recess 63 and locks the doors intheir closed position. Stop 65 forms one end of a transversely extendingdoor control arm 66 arranged in pairs with a pair disposed on each sideof the truck. The portion of the arm 66 adjacent the end forming thestop 65 is pivotally mounted to the car body underframe 48 on a pin 67passed through the arm and through a pair of depending ears constitutinga bracket 68 secured to the car body underframe as particularly shown inFig. 3. The end of the arm forming the stop 65 is bifurcated and pin 69is passed through the bifurcation and a roller is mounted on the pin soas to provide a roller form of stop 65 for engaging the recess 63 andcam face 64. The opposite ends of each of the arms 66 are pivotallymounted to the underframe so that one end of the control arm is pivotedto the underframe at a point spaced a material distance from the medialplane of the car and on the other side of the car the arm is pivotallyconnected adjacent the end provided with the stop to the dumping carbody and it is a feature of this disclosure that the control arms arepivoted on the same axis of turn about which turns the car body relativeto the underframe when the car body is dumped on the corresponding side.The connection of the control arm with the underframe is provided bymeans of a pin 70 mounted in the upstanding flanges 71, '72 of a pinsupporting casting '73 forming the outer end of a cross bearer door armsupport 74 more particularly shown in Fig. 2. The cross bearer includespressings '75 extending outwardly and laterally from the center sillsand braced in position by a top cover plate '76 overlapping the coverplate of the center sill. It is noted from the showing in Fig. 2 thatthe pins 70 are disposed in transverse alignment. The control arms ofeach pair have their ends slightly'offset when viewed in plan so thatthey may be disposed in overlapping relation and thus engage the doorcontrolling arms 59 which are also disposed in transverse alignment but,of course, offset from the pins 70 a distance sufiicient to compensatefor the width of the control arm.

In operation it is understood that the car body is dumped in a somewhatconventional manner, the actuation of the cylinders on one side of thecar such for instance as the right hand side shown in Fig. 4 will causean initial movement of the inner pistons 37 to start the elevation ofthe right hand side of the car body. From the construction shown in Fig.5 it is apparent that any initial lifting movement of theintermediate'cylinder 38 will be but for a limited distance or until thehead 38 comes in'oonta'ct with the car underframe which would act tostop the lifting of the piston 30 until the car body had been liftedaway from the same by the continued actuation of the inner pistons 36.When the innerpiston 36 has reached the limit'of its upward movementdefined by the head 38 the'intermediate' cylinder 30 will then continueto rise until the car is in its fullydumped position as shown in Fig. 4.During this dumping movement the car will, of course, turn on the freehinge connection at'thc opposite side. As the control arms which'arelocking the doors on the right hand, or elevated side of the car, arepivoted at their left ends about the pins disposed in the axis oftheturning movement of the car, the control members will, of course,maintain their position fixed relative to the dumping car body and willbe thus maintained in position locking the right hand door as shown inFig. 4 (right hand side). In this case the arms controlling the lefthand doors, or on the depressed side of the car body, will be held intheir normal position resting on the cross bearer 74 and theconformation of the cam 64 is so designed that as the car body istilted, as to the left in the showing at the left hand side of Fig. 4,thecam 64 in effect rides under the roller stop 65 and this has theeffect of easing the opening movement of the door on the depressed sideof the car. The door will continue to open until the car body is in itsfully dumped position as shown in Fig. 4.

In order to right the car and return the same from for instance thedumped position shown in Fig. 4 into the righted position shown in Fig.3, conventional practice is followed in that pressure is released fromthe right hand cylinders and admitted to the left hand cylinders. Theleft hand cylinders will act conventionally to move the car body backinto its normal righted position. During this movement the control armwill in effect bear on the extension of the door stiffener and lift thedoor from the open position shown in Fig. '4into the closed positionshown in Fig. 3 at the end of which movement the roller will be inengagement with the recess at the end of the extension and the door willthen be in its normal locked position.

While I have shown and described, and have pointed out in the annexedclaims, certain novel features of my invention, it will be understoodthat various omissions, substitutions and changes in the form anddetails ofthe device illustrated and in its operation may be made bythose skilled in the art without departing from the spirit of theinvention.

' Having thus described my invention, what I claim is:

1. In a dump car, the combination with a car body tiltable in bothlateral directions of a cen- 1 'ter sill construction, a bolster securedto said construction, castings secured to the outer ends of saidbolsters, said castings each including a pin extending longitudinally ofthe car offset from the center sill construction and each adapted to lllltl Lille constitute a pivotal mounting for the. tiltable car body.

2. In a dump car, the combination with a car body tiltable in bothlateral directions of a center sill construction, a bolster secured tosaid construction and a bolster bottom cover plate for securing thebolster to the center sill construction, castings secured to the outerends of said bolsters, said castings each including a pin extendinglongi tudinally oi the car offset from the center sill construction andeach adapted to constitute a pivotal mounting for the tiltalole carbody.-

3. In a dump car, the combination of a bolster construction and a hingepin casting secured to the outer end of the bolster construction, saidcasting including a pin constituting part of a hinge connection for adumping car body.

l. In a dump car, the combination of a center sill construction, acomposite bolster including extensions from opposite sides of the centersill construction, a bolster top plate, and hinge pin castings havingtop portions overlapping the top plate and providing pivotal supportsfor the car body on opposite sides of the center sill construction.

5. In a dump car, the combination of a fabricated center sill, a castingprojecting laterally therefrom and coacting therewith to provide a crossmember of the depth of the center sills and provided at its outer endwith a hinge pin, a tiltable car body provided with a saddle forstraddling said hinge pin and adapted to coact therewith to provide apivotal support for the car body.

6. In a dump car underframe, the combination of a center sill, acylinder supporting casting having one edge fitted to one side of thecenter sill and projecting laterally therefrom, said casting includingan upwardly facing bearing adapted to receive a trunnion of a bodydumping cylinder.

'7. In a dump car underframe, the combination of a center sill, acylinder supporting casting having one edge fitted to one side of thecenter sill and projecting laterally therefrom, said casting includingan upwardly facing bearing adapted to receive a trunnion of a bodydumping cylinder, and a bearing cap fitted to said bearing and coactingtherewith to encircle the trimnion.

8. In a dump car, the combination of an underirame comprising a centersill construction, a laterally dumping body mounted on the underframe, apair of cylinder supporting castings secured to one side of saidconstruction and extending thereirom in spaced apart parallel relation,said castings provided with bearings and means for dumping the body,said means including a cylinder provided with trunnion pins journalledin said bearings.

S. In a dump car, the combination of an underframe provided with a pairof pins extending lengthwise of the car and disposed in trans versealignment on opposite sides of the car, a tiltable car-body mounted onthe underframe for dumping movement about the axis of each of said pins,side doors carried by the carbody on opposite lateral sides thereof, apair of door controlling arms extending transversely across the car,said arms being pivoted to the car body and provided beyond the pivotalconnection with the car body with a roller for engaging the adjacentdoor to bear directly on the door with a sliding engagement to move thesame into a closed position and lock the same in closed position.

10. In a dump car, the combination of a center sill, means forsupporting a dumping cylinder including a casting having one edge fittedto the center sill, said casting being cored to provide lightness inweight and flanged to increase structural strength, said castingprovided with a bearing for pivotally supporting a trimnion of thedumping cylinder.

11. Ina dump car, the combination of a center sill, means for supportinga dumping cylinder including a casting having its top recessed toprovide the lower part or a trunnion bearing, a bearing cap constitutingthe upper part of the bearing and means for securing the cap in place.

12. In a dump car, a car underframe including a casting constituting acylinder support and a bottom hinge support, said casting provided ithmeans forming a bearing for a dumping cylinder and provided with a pairof upstanding cars, a pin supported at opposite ends in said ears andproviding a hinge support for a dump ing body.

1.8. In a dump car, the combination of a center sill, a cross memberincluding vertically disposed elements, a pin carrying casting at eachouter end or" said member constituting a bottom hinge casting and ahorizontally disposed plate between the center sill and said verticallydisposed elements constituting a gusset plate for bracing the pincarrying castings from the cen ter sill and a car body provided withupper hinge castings normally engaging said lower hinge castings.

14. In a dump car, the combination of a center sill, a bolster providedat opposite ends with lower hinge members, a dumping car body providedwith upper hinge members normally resting on the lower hinge members anda bolster bottom plate underlapping the center sill and bolster andlower hinge members to brace the lower hinge members from the centersill at points thereon spaced longitudinally from the bolster.

15. In a dump car, the combination of an underframe provided with a pairof transversely disposed lower hinge members including upwardly exposedpins extending lengthwise of the car, a car body provided with a pair ofupper hinge members including downwardly facing U members resting on thelower hinge pins when the car body is in its normal righted position andconstituting pivots on each side of the carabout which pivots the carbody is turned when dumped, and an arm extending transversely across thecar having one end pivoted to the underframe and the other end pivotedto the car body, both of said pivotal connections with the arm beingspaced from the longitudinal medial plane of the car.

16. In a dump car, the combination of an allmetal underframe including apair of transversely spaced apart longitudinally extending sills, abolster formed of parts fitted between and on opposite sides of thesills and coacting therewith to form a rugged form of bolster, saidbolster provided at its outer ends with upwardly exposed andlongitudinally extending hinge pins, a car body provided with yokesadapted to rest on said pins to support the car body in stableequilibrium, the hinge pin and yoke on each side coacting to providetrunnions on opposite sides of the car and about which the car bodyturns when tilted into dumping positions.

ROY E. CARTZDAFNER.

